Background

The Republic of Benin was a short-lived secession by Mid Western State
of Nigeria between 19 September 1967 until 20 September
1967. Jens Pattke, 08 July 2006, text amended by James Dignan, Sept 2008

Republic of Benin (1967)

image by Ivan
Sache, 01 July 1996

Flag of the so-called Republic of Benin established in mid-west Nigeria in
1967. Stuart Notholt, 30 June 1996

The flag was the same as Biafra's but the red is
changed to black (and then the black is 2/3 of the flag). The Republic of
Benin survived only a few hours. The capital was taken by Biafran forces later the
same day
and was recovered by the Nigerian federal troops during the night. The nominal
territory of the republic (in fact under Biafran control) was recovered later.Jaume Ollé, 20 Jan 1997